Freedom251 › Time-Series Databases
SiriDB
What SiriDB is
SiriDB is an open-source time-series database for analyzing and aggregating data such as IoT readings and financial transactions. Its storage approach stores time-series data without bulky indexes. A custom SiriDB query language supports dynamic grouping and distributed queries across pools, while SQL is not supported. Pools can be added while SiriDB runs, with data divided evenly across available pools. The maker says updates and maintenance can happen while the cluster remains online; replicas provide redundancy and load balancing. SiriDB HTTP supplies an API for requests, inserts, and queries, with JSON, Qpack, and basic authentication. The HTTP connector documentation also describes SSL support. Deployment options include a Debian package, Linux or OSX compilation, Docker, and Kubernetes deployment. Integrations include a Grafana data source plugin and connectors for C/C++, Python, Go, Node.js, Java, PHP, and R. SiriDB is free and licensed under MIT for its multi-node clustering version. Community help is available through Slack and GitHub, while paid support packages provide monitoring and health checks.
Who it suits
SiriDB suits developers managing time-series workloads from IoT or financial data sources. It fits teams that need retention policies, horizontal scaling, distributed queries, and non-SQL ingestion options.
What it does well
- Open-source and free
- Supports horizontal scaling across pools
- Online maintenance and cluster updates
- Connectors for several programming languages
- Grafana integration and HTTP API
What to know first
- SQL is not supported
- Uses its own query language
- Commercial support plans require 12-month contracts
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Basic support | Minimum support contract length: 12 months · 8/5 support coverage CET · Best effort response via Slack · Remote monitoring · 1 remote health check/year · 1 pool | €150 a month |
| Standard support | Minimum support contract length: 12 months · 8/5 support coverage CET · Maximum 8-hour response via Slack · Remote monitoring · 2 remote health checks/year · 6 pools | €400 a month |
| Premium support | Minimum support contract length: 12 months · 24/7 coverage with on-call engineer · Maximum 4-hour response · Remote monitoring · 4 remote health checks/year · 10 pools | €800 a month |
As siridb.com lists them, read 8 Oct 2026. The maker's own page has the final word.
Verdict
SiriDB combines an open-source time-series database with pool scaling, online maintenance, and multiple ingestion routes. Its custom query language and lack of SQL support should be evaluated against existing database skills.
Facts from SiriDB's own pages
- Additional language connectors
- The documentation also provides connection pages for Java, PHP, and R. · docs.siridb.com, 8 Oct 2026
- Availability
- The maker says cluster updates and maintenance can happen while the database remains online, and replicas provide redundancy and load balancing. · docs.siridb.com, 8 Oct 2026
- Deployment
- The server can be installed from a Debian package, compiled on Linux or OSX, or run with Docker. · github.com, 8 Oct 2026
- Hosting
- Cesbit offers SiriDB cluster hosting on Google Cloud and says SiriDB can be deployed in Kubernetes; hosting is combined with a support offering. · siridb.com, 8 Oct 2026
- Integrations
- The maker lists a Grafana data source plugin and native connectors for C/C++, Python, Go, and Node.js. · github.com, 8 Oct 2026
- Interfaces
- SiriDB HTTP provides an API for service requests, inserts, and queries, with JSON and Qpack support and basic authentication. · docs.siridb.com, 8 Oct 2026
- License
- The multi-node clustering version is available as open source under the MIT license. · docs.siridb.com, 8 Oct 2026
- Maker
- Cesbit describes itself as a Dutch software startup and identifies SiriDB as one of its products. · docs.siridb.com, 8 Oct 2026
- Product
- SiriDB is an open-source time-series database for analyzing and aggregating time-series data from sources including IoT and financial transactions. · docs.siridb.com, 8 Oct 2026
- Querying
- Its custom query language supports dynamic grouping of time series and distributed queries across pools. · siridb.com, 8 Oct 2026
- Scaling
- Pools can be added while SiriDB is running, and data is divided evenly across available pools. · docs.siridb.com, 8 Oct 2026
- Security
- The HTTP API documentation describes basic authentication, while the SiriDB HTTP connector page says it supports SSL. · docs.siridb.com, 8 Oct 2026
- Storage design
- SiriDB uses an algorithm that stores time-series data without bulky indexes. · docs.siridb.com, 8 Oct 2026
- Support
- Community support is available through Slack and GitHub, and commercial support packages include remote monitoring and health checks. · siridb.com, 8 Oct 2026
Where SiriDB stands on Freedom251
- Time-Series Databases#22 of 36